Who owns AMRZ (AMRZ)
Which tracked institutional funds hold AMRZ, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AMRZ company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
194 tracked funds added or opened AMRZ while 93 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
AMRZ’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.1pp gap the other way — the median holder sizes AMRZ more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in AMRZ divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 448 tracked filers holding AMRZ, 289 increased or opened the position and 169 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in AMRZ between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 64
- VANGUARD CAPITAL MANAGEMENT LLC$1.1B
- VANGUARD FIDUCIARY TRUST CO$396M
- VICTORY CAPITAL MANAGEMENT INC$218M
- VANGUARD ASSET MANAGEMENT, Ltd$102M
- VANGUARD PORTFOLIO MANAGEMENT LLC$80M
- CapitalatWork S.A.$33M
Full exits 37
- VANGUARD GROUP INC$1.7B
- NORGES BANK$929M
- Dodge & Cox$293M
- Freestone Grove Partners LP$65M
- Rokos Capital Management LLP$59M
- TWO SIGMA ADVISERS, LP$30M
Largest adds
- MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$228M
- DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main$150M
- JANE STREET GROUP, LLC$119M
- AMERICAN CENTURY COMPANIES INC$88M
- Zurcher Kantonalbank (Zurich Cantonalbank)$47M
- TWO SIGMA INVESTMENTS, LP$39M
Largest trims
- WELLINGTON MANAGEMENT GROUP LLP$334M
- BlackRock, Inc.$273M
- BARCLAYS PLC$129M
- UBS Group AG$116M
- Slate Path Capital LP$107M
- FMR LLC$78M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC new | 20,628,430 | $1.1B | 7.5% | 2026-Q1 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main added | 12,010,037 | $672M | 4.4% | 2026-Q1 |
| HARRIS ASSOCIATES L P trimmed | 11,344,767 | $636M | 4.1% | 2026-Q1 |
| UBS Group AG trimmed | 10,929,766 | $612M | 4.0% | 2026-Q1 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 10,681,187 | $579M | 3.8% | 2026-Q1 |
| BlackRock, Inc. trimmed | 8,827,771 | $495M | 3.2% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 7,114,738 | $396M | 2.6% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 6,711,677 | $365M | 2.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 6,277,998 | $350M | 2.3% | 2026-Q1 |
| Pictet Asset Management Holding SA added | 5,216,765 | $283M | 1.8% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC added | 4,772,941 | $263M | 1.7% | 2026-Q1 |
| STATE STREET CORP added | 4,608,449 | $258M | 1.7% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 4,066,433 | $228M | 1.5% | 2026-Q1 |
| Vontobel Holding Ltd. trimmed | 4,061,916 | $221M | 1.4% | 2026-Q1 |
| FIRST MANHATTAN CO. LLC. trimmed | 3,937,879 | $221M | 1.4% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC new | 3,886,958 | $218M | 1.4% | 2026-Q1 |
| Slate Path Capital LP trimmed | 3,752,947 | $210M | 1.4% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 3,676,648 | $206M | 1.3% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 3,819,349 | $206M | 1.3% | 2026-Q1 |
| FMR LLC trimmed | 3,573,639 | $198M | 1.3% | 2026-Q1 |
| First Pacific Advisors, LP trimmed | 3,146,383 | $176M | 1.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 3,041,291 | $170M | 1.1% | 2026-Q1 |
| Legal & General Group Plc trimmed | 2,667,308 | $146M | 0.9% | 2026-Q1 |
| Gates Capital Management, Inc. trimmed | 2,412,533 | $135M | 0.9% | 2026-Q1 |
| River Road Asset Management, LLC trimmed | 2,243,463 | $126M | 0.8% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 2,243,106 | $126M | 0.8% | 2026-Q1 |
| BARCLAYS PLC trimmed | 2,157,044 | $121M | 0.8% | 2026-Q1 |
| CITIGROUP INC added | 2,224,925 | $121M | 0.8% | 2026-Q1 |
| Bank Julius Baer & Co. Ltd, Zurich trimmed | 2,040,347 | $113M | 0.7% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 1,957,129 | $110M | 0.7% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 1,956,600 | $110M | 0.7% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 1,841,026 | $102M | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 1,788,094 | $100M | 0.7% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 1,758,269 | $98M | 0.6% | 2026-Q1 |
| FIL Ltd added | 1,712,890 | $96M | 0.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,687,633 | $95M | 0.6% | 2026-Q1 |
| Amundi added | 1,654,739 | $93M | 0.6% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 1,597,035 | $89M | 0.6% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 1,548,536 | $84M | 0.5% | 2026-Q1 |
| Swiss National Bank added | 1,460,874 | $82M | 0.5% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,420,900 | $80M | 0.5% | 2026-Q1 |
| 1832 Asset Management L.P. trimmed | 1,400,120 | $78M | 0.5% | 2026-Q1 |
| National Pension Service trimmed | 1,389,060 | $78M | 0.5% | 2026-Q1 |
| SIH Partners, LLLP trimmed | 1,344,470 | $75M | 0.5% | 2026-Q1 |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. added | 1,272,918 | $71M | 0.5% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 1,134,317 | $64M | 0.4% | 2026-Q1 |
| DJE Kapital AG added | 1,113,036 | $60M | 0.4% | 2026-Q1 |
| CAMBIAR INVESTORS LLC trimmed | 1,056,207 | $59M | 0.4% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 1,039,046 | $58M | 0.4% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 1,009,553 | $57M | 0.4% | 2026-Q1 |
| MORGAN STANLEY trimmed | 981,106 | $55M | 0.4% | 2026-Q1 |
| SHAPIRO CAPITAL MANAGEMENT LLC added | 957,785 | $54M | 0.3% | 2026-Q1 |
| Permian Investment Partners, LP trimmed | 950,020 | $53M | 0.3% | 2026-Q1 |
| Banque Cantonale Vaudoise added | 941,472 | $51M | 0.3% | 2026-Q1 |
| COOPERMAN LEON G | 880,000 | $49M | 0.3% | 2026-Q1 |
| Artisan Partners Limited Partnership trimmed | 815,938 | $46M | 0.3% | 2026-Q1 |
| LAKEWOOD CAPITAL MANAGEMENT, LP added | 814,200 | $46M | 0.3% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 768,623 | $43M | 0.3% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 725,515 | $41M | 0.3% | 2026-Q1 |
| BESSEMER GROUP INC added | 735,127 | $40M | 0.3% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN added | 684,375 | $38M | 0.2% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 678,989 | $38M | 0.2% | 2026-Q1 |
| HRT FINANCIAL LP trimmed | 673,203 | $38M | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 677,541 | $38M | 0.2% | 2026-Q1 |
| NATIXIS ADVISORS, LLC added | 654,194 | $37M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 640,033 | $36M | 0.2% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 613,230 | $34M | 0.2% | 2026-Q1 |
| CapitalatWork S.A. new | 586,500 | $33M | 0.2% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 549,606 | $31M | 0.2% | 2026-Q1 |
| Invesco Ltd. trimmed | 542,525 | $30M | 0.2% | 2026-Q1 |
| Robeco Institutional Asset Management B.V. added | 540,835 | $30M | 0.2% | 2026-Q1 |
| TEACHER RETIREMENT SYSTEM OF TEXAS trimmed | 536,849 | $30M | 0.2% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 526,780 | $30M | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 508,562 | $28M | 0.2% | 2026-Q1 |
| SAMLYN CAPITAL, LLC added | 502,099 | $28M | 0.2% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 482,620 | $27M | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 482,938 | $27M | 0.2% | 2026-Q1 |
| Exane Asset Management new | 527,515 | $26M | 0.2% | 2026-Q1 |
| ROYAL BANK OF CANADA added | 442,726 | $25M | 0.2% | 2026-Q1 |
| Compagnie Lombard Odier SCmA trimmed | 454,581 | $25M | 0.2% | 2026-Q1 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 450,151 | $24M | 0.2% | 2026-Q1 |
| Allianz Asset Management GmbH trimmed | 424,947 | $23M | 0.2% | 2026-Q1 |
| Alpha Wave Global, LP new | 407,226 | $23M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 381,550 | $21M | 0.1% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 347,247 | $19M | 0.1% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 341,469 | $19M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 31,170,458 | $1.7B | 11.0% | 2025-Q4 stale |
| NORGES BANK added | 16,926,762 | $929M | 6.1% | 2025-Q4 stale |
| Dodge & Cox trimmed | 5,385,441 | $293M | 1.9% | 2025-Q4 stale |
| CAISSE DES DEPOTS ET CONSIGNATIONS new | 1,931,802 | $103M | 0.7% | 2025-Q2 stale |
| Freestone Grove Partners LP new | 1,205,796 | $65M | 0.4% | 2025-Q4 stale |
| Rokos Capital Management LLP trimmed | 1,082,175 | $59M | 0.4% | 2025-Q4 stale |
| COOPER CREEK PARTNERS MANAGEMENT LLC trimmed | 962,543 | $47M | 0.3% | 2025-Q3 stale |
| LOCUST WOOD CAPITAL ADVISERS, LLC new | 761,948 | $37M | 0.2% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 562,268 | $30M | 0.2% | 2025-Q4 stale |
| Wolf Hill Capital Management, LP trimmed | 625,000 | $30M | 0.2% | 2025-Q3 stale |
| PointState Capital LP new | 578,633 | $29M | 0.2% | 2025-Q2 stale |
| Jump Financial, LLC added | 454,764 | $25M | 0.2% | 2025-Q4 stale |
| BANK OF NOVA SCOTIA new | 400,762 | $22M | 0.1% | 2025-Q4 stale |
| Zimmer Partners, LP added | 366,000 | $20M | 0.1% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.